/* ===== 联系我们 page-contact ===== */
.page-contact {
  --ct-space: clamp(28px, 5vw, 64px);
  --ct-gap: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-contact .contact-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(20px, 3vw, 36px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-contact .contact-crumbs a {
  color: var(--cyan-dark);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .contact-crumbs a:hover,
.page-contact .contact-crumbs a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

.page-contact .crumb-sep {
  color: var(--line);
}

/* 索引标签 */
.page-contact .idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
  margin: 0;
}

.page-contact .idx--line {
  color: var(--stone);
  border-left: 3px solid var(--red);
  padding-left: 10px;
  line-height: 1.2;
}

/* 首屏 */
.page-contact .contact-intro {
  margin-top: 20px;
  padding-top: var(--ct-gap);
  border-top: 1px solid var(--line);
  display: grid;
  gap: var(--ct-gap);
}

.page-contact .contact-intro h1 {
  margin: 16px 0 0;
  font-size: clamp(28px, 7.2vw, 48px);
  line-height: 1.16;
  font-weight: 500;
  letter-spacing: -.01em;
  color: var(--stone);
}

.page-contact .contact-lead {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--stone);
}

.page-contact .contact-jump {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-contact .contact-jump li + li::before {
  content: "·";
  color: var(--line);
  margin-right: 14px;
}

.page-contact .contact-jump a {
  color: var(--cyan-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .contact-jump a:hover,
.page-contact .contact-jump a:focus-visible {
  color: var(--white);
  background: var(--red);
  border-bottom-color: var(--red);
  padding: 2px 4px;
}

.page-contact .contact-intro__figure {
  margin: 0;
}

.page-contact .media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--white);
}

.page-contact .media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-conic-gradient(from 0deg, rgba(10, 31, 68, .05) 0% 25%, transparent 0% 50%);
  background-size: 36px 36px;
  opacity: .7;
  pointer-events: none;
  transition: opacity .3s var(--ease);
}

.page-contact .media-frame--wide { aspect-ratio: 3 / 2; }
.page-contact .media-frame--square { aspect-ratio: 10 / 7; }

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: inherit;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.page-contact .media-frame:hover::before { opacity: 1; }

.page-contact .figure-note {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

/* 通用小节标题 */
.page-contact .sec-head {
  margin-bottom: var(--ct-gap);
}

.page-contact .sec-head h2 {
  margin: 12px 0 0;
  font-size: clamp(21px, 3.6vw, 30px);
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: -.01em;
  color: var(--stone);
  max-width: 26em;
}

.page-contact .sec-note {
  margin: 12px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* C-02 联系入口 */
.page-contact .contact-channel {
  margin-top: var(--ct-space);
  padding-top: var(--ct-gap);
  border-top: 1px solid var(--line);
}

.page-contact .channel-grid {
  display: grid;
  gap: 14px;
}

.page-contact .channel-block {
  position: relative;
  overflow: hidden;
  padding: 26px 22px 24px;
  border: 1px solid var(--line);
  transition: background-color .28s var(--ease), transform .28s var(--ease), border-color .28s var(--ease);
}

.page-contact .channel-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--cyan);
  transform: translateX(-4px);
  transition: transform .28s var(--ease);
}

.page-contact .channel-block::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-conic-gradient(from 0deg, rgba(255, 255, 255, .07) 0% 25%, transparent 0% 50%);
  background-size: 32px 32px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s var(--ease);
}

.page-contact .channel-block > * {
  position: relative;
  z-index: 1;
}

.page-contact .channel-block:hover::after,
.page-contact .channel-block:focus-within::after,
.page-contact .channel-block:focus::after { opacity: 1; }

.page-contact .channel-block:hover::before,
.page-contact .channel-block:focus-within::before,
.page-contact .channel-block:focus::before { transform: translateX(0); }

.page-contact .channel-block--mail {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

.page-contact .channel-block--mail:hover,
.page-contact .channel-block--mail:focus-within,
.page-contact .channel-block--mail:focus {
  background: var(--navy-ink);
}

.page-contact .channel-block--tel {
  background: var(--white);
  color: var(--red);
}

.page-contact .channel-block--tel::after {
  background-image: repeating-conic-gradient(from 0deg, rgba(10, 31, 68, .06) 0% 25%, transparent 0% 50%);
}

.page-contact .channel-block--tel:hover,
.page-contact .channel-block--tel:focus-within,
.page-contact .channel-block--tel:focus {
  background: var(--paper-dark);
}

.page-contact .channel-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  opacity: .78;
}

.page-contact .channel-value {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 4.4vw, 25px);
  line-height: 1.35;
  letter-spacing: .01em;
  overflow-wrap: anywhere;
}

.page-contact .channel-value--num {
  font-family: var(--font-num);
  font-size: clamp(28px, 8vw, 46px);
  line-height: 1.1;
  letter-spacing: .02em;
}

.page-contact .channel-use {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.72;
}

.page-contact .channel-meta {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  opacity: .72;
}

.page-contact .channel-block--mail .channel-meta { border-top-color: rgba(255, 255, 255, .22); }
.page-contact .channel-block--tel .channel-meta { border-top-color: var(--line); }

.page-contact .source-line {
  margin: 16px 0 0;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

/* C-03 提问规范 */
.page-contact .contact-checklist {
  margin-top: var(--ct-space);
  padding-top: var(--ct-gap);
  border-top: 1px solid var(--line);
}

.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .check-item {
  background: var(--paper);
  min-width: 0;
}

.page-contact .check-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
}

.page-contact .check-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  cursor: pointer;
  transition: background-color .22s var(--ease);
}

.page-contact .check-label:hover { background: var(--paper-dark); }

.page-contact .check-box {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1.5px solid var(--moss);
  position: relative;
  transition: background-color .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .check-box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border-right: 2px solid var(--white);
  border-bottom: 2px solid var(--white);
  transform: rotate(45deg) scale(.6);
  opacity: 0;
  transition: opacity .2s var(--ease), transform .2s var(--ease);
}

.page-contact .check-input:checked + .check-label .check-box {
  background: var(--moss);
  border-color: var(--moss);
}

.page-contact .check-input:checked + .check-label .check-box::after {
  opacity: 1;
  transform: rotate(45deg) scale(1);
}

.page-contact .check-input:checked + .check-label .check-text {
  color: var(--muted);
}

.page-contact .check-input:focus-visible + .check-label .check-box {
  outline: 2px solid var(--cyan-dark);
  outline-offset: 3px;
}

.page-contact .check-code {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--clay);
  margin-top: 4px;
}

.page-contact .check-text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--stone);
  min-width: 0;
  transition: color .22s var(--ease);
}

/* C-04 处理节奏 */
.page-contact .contact-rhythm {
  margin-top: var(--ct-space);
  padding-top: var(--ct-gap);
  border-top: 1px solid var(--line);
}

.page-contact .rhythm-list {
  border-top: 1px solid var(--line);
}

.page-contact .rhythm-row {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .rhythm-key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--stone);
}

.page-contact .rhythm-key::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: var(--cyan-dark);
}

.page-contact .rhythm-val {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--stone);
  max-width: 46em;
}

.page-contact .rhythm-val a {
  color: var(--cyan-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .rhythm-val a:hover,
.page-contact .rhythm-val a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

/* C-05 地址与备案 */
.page-contact .contact-address {
  margin-top: var(--ct-space);
  padding: clamp(22px, 4vw, 34px);
  background: var(--paper-dark);
  border: 1px solid var(--line);
  display: grid;
  gap: var(--ct-gap);
}

.page-contact .contact-address h2 {
  margin: 12px 0 0;
  font-size: clamp(20px, 3.2vw, 26px);
  font-weight: 500;
  color: var(--stone);
}

.page-contact .addr-list {
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .addr-row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .addr-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-contact .addr-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--stone);
  overflow-wrap: anywhere;
}

.page-contact .addr-foot {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .address-figure {
  margin: 0;
}

/* C-06 渠道边界 */
.page-contact .contact-scope {
  margin-top: var(--ct-space);
  padding-top: var(--ct-gap);
  border-top: 1px solid var(--line);
}

.page-contact .scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .scope-list li {
  position: relative;
  padding: 14px 16px 14px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  font-size: 15px;
  line-height: 1.75;
  color: var(--stone);
}

.page-contact .scope-list strong {
  font-weight: 500;
  color: var(--navy);
}

.page-contact .scope-signoff {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
}

.page-contact .scope-line {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--stone);
}

.page-contact .scope-line a {
  color: var(--cyan-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .scope-line a:hover,
.page-contact .scope-line a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

.page-contact .contact-badge {
  position: relative;
  flex: none;
  width: 68px;
  height: 68px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background-color: var(--white);
  background-image: repeating-conic-gradient(from 0deg, var(--red) 0% 25%, var(--white) 0% 50%);
  background-size: 22px 22px;
  transition: transform .28s var(--ease);
}

.page-contact .contact-badge:hover { transform: translateY(-3px); }

.page-contact .contact-badge__cap {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--white);
  background: var(--navy);
  padding: 3px 6px;
}

/* 平板与桌面 */
@media (min-width: 860px) {
  .page-contact .contact-intro {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    align-items: start;
  }

  .page-contact .contact-jump li + li::before { margin-right: 14px; }

  .page-contact .channel-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 0;
    align-items: start;
  }

  .page-contact .channel-block--mail {
    padding: 38px 30px 32px;
  }

  .page-contact .channel-block--tel {
    margin-top: 52px;
    margin-left: -1px;
    padding: 28px 30px 26px;
    border-left: 1px solid var(--line);
  }

  .page-contact .check-label { padding: 18px 22px; }

  .page-contact .rhythm-row {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
    padding: 22px 0;
  }

  .page-contact .contact-address {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-contact .addr-row {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-contact .addr-row dt { padding-top: 2px; }
}

@media (min-width: 1120px) {
  .page-contact .channel-block--mail { padding: 46px 34px 38px; }
  .page-contact .channel-block--tel { margin-top: 72px; }
  .page-contact .contact-lead { font-size: 17px; }
}

/* 动效收敛 */
@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition: none !important;
    animation: none !important;
  }

  .page-contact .contact-badge:hover { transform: none; }
}